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Post Title: 1994 nissan sentra
Posted by: jamessands at 7:40 PM 6/18/2009

on startup my car idle high but it does not go down after a long time.
can someone help me with a solution for this

Post Title: Re: 1994 nissan sentra (jamessands)
Posted by: nissasin at 8:12 PM 6/18/2009

Throttle cable too tight, Throttle stop too high or Faulty idle air control valve. I would try in this order.

Post Title:
Posted by: nametakennow at 9:06 PM 6/19/2009

Just at startup? Warm starts as well or just cold?

Engines idle high on cold starts to get everything warmed up faster.

Otherwise check for a vac leak in addition to what was posted above.

Post Title: Re: (nametakennow)
Posted by: jamessands at 5:57 PM 6/24/2009

only at cold start. warm start all is fine

Post Title: Re: (jamessands)
Posted by: nissasin at 7:13 PM 6/24/2009

How long is a long time with the idle being high at cold start? 1 minute, 5 minutes, 10 minutes?

It is definitely not your throttle cable, nor throttle stop. I'm starting to side more on the Idle Air or even possible coolant temp sensor. Depending on how severe the idle is I would base my level of concern accordingly.

Post Title: Re: (nissasin)
Posted by: jamessands at 11:34 AM 6/28/2009

it is about 30mins to 45 mins and have to turn the car off before returns to a normal idle

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